circalar motion notes

A-xis- straight line around which rotation takes place

Rotation- object turns around an internal axis

Linear speed -distance time tangential speed -along a circular path

Rotations speed number of rotations per unit of time

centripetal force -force that causes an object to follow circular path

centripetal acclerration -always points towards the center

Gravity is a constant force...
wieght is the pull of gravity...

Newtons law of universal gravitation

Newtons conclude that any two object in the universal exert gravity
mass..
as the mass of either objects or both objects increases..

effect of mass of gravity
1m0 1f 01m
2M0 2F 02M
3m0 3F 03M
universal gravitation of distance as the distance seperation two objects increase the force of altraction
is exponentially smaller

Friction

When a force is a relative motion,it is kinetic friction force.
kinetic friction force Ff=mkfn
static friction force
all listed coefficents are less then 1
the forces are Ff and FN
opposing motion is friction force
direct and static force is static friction force..

Coulombs laws/electric fields

The relationship among electrical forces,charges,and distance
its like newtons law of gravity ,electrical forces can be attractive or repulsive

Discovred by french..
coulombs law F=kqaqb over 2
force (N)
Q=charge of coulumb
D=distance (M)
The si unit measures for electrical charge is a coulumb charge of 1 proton...
The charge (Q) is not a vectof a partical
therefore when described as a positive or negative that tells whether it is a proton or electron
but is not magnitude of the charge
Do nmot put negatives in a charge...

Grounding - Touch body to earth to eliminate excess charge..
Direction of arrows indicate the charge of the field
two charges are separated by 0.03M

Electrical Fields

a vector that indicates the relates the force exerted on a charge

The magnitude of the electrical field...